| 引用本文: | 马金环,魏智强,赵继威,路承功.FeOCl光芬顿催化剂的表征及其降解罗丹明B的效果[J].材料科学与工艺,2023,31(6):9-18.DOI:10.11951/j.issn.1005-0299.20220395. |
| MA Jinhuan,WEI Zhiqiang,ZHAO Jiwei,LU Chenggong.Characterization of FeOCl photo-Fenton catalyst and its degradation effect on Rhodamine B[J].Materials Science and Technology,2023,31(6):9-18.DOI:10.11951/j.issn.1005-0299.20220395. |
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| 摘要: |
| 为了研究不同形貌FeOCl的光芬顿性能及影响因素,本文采用简单煅烧法成功制备了3种不同形貌的FeOCl,并研究了在模拟太阳光下,初始pH值、H2O2含量和FeOCl用量对光芬顿降解罗丹明B(RhB)的影响。通过X射线衍射(XRD),扫描电子显微镜(SEM)、X射线光电子能谱(XPS)、红外光谱(FT-IR)和紫外可见吸收光谱(UV-vis)测试了样品的结构、形貌、元素组成和光学性能。研究表明:所制样品均为层状堆叠结构,结晶性能良好,对可见光的响应能力各不相同；光致发光(PL)谱和电解液为1 mol/L的Na2SO4溶液中瞬态光电流测试表明,不同形貌的FeOCl具有不同的载流子的分离和复合能力,其中花状FeOCl能够有效加速光生载流子的分离且复合效率低；光芬顿实验中,花状FeOCl表现出良好的光芬顿性能,在50 min内,RhB的去除率达到98.8%。 |
| 关键词: FeOCl 罗丹明B 自由基 光芬顿 降解机理 |
| DOI：10.11951/j.issn.1005-0299.20220395 |
| 分类号:O643.36 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(522680422)；甘肃省自然科学基金资助项目(22JR5RA253). |
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| Characterization of FeOCl photo-Fenton catalyst and its degradation effect on Rhodamine B |
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MA Jinhuan1, WEI Zhiqiang1,2, ZHAO Jiwei1, LU Chenggong3
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(1.School of Science, Lanzhou University of Technology, Lanzhou 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals(Lanzhou University of Technology), Lanzhou 730050, China; 3.School of Architecture and Construction, Lanzhou University of Technology, Lanzhou 730050, China)
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| Abstract: |
| To explore the photo-Fenton properties and influencing factors of FeOCl with different morphologiy, three kinds of FeOCl with different morphology were successfully prepared by a simple calcination method. The effects of initial pH value, H2O2 content, and catalyst dosage on the photo-Fenton in the simulation of sunlight degradation Rhodamine B (RhB) were investigated. The structure, morphology, elemental composition, and optical properties of the samples were tested by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), infrared spectroscopy (FT-IR), and ultraviolet visible absorption spectrum (UV-vis). Results show that all the samples were layered, exhibiting good crystallization properties and different response to visible light. In addition, the transient photocurrent was measured by Na2SO4 solution with 1 mol/L electrolyte and photoluminescence (PL) spectra. FeOCl with different morphology displayed different carrier separation and recombination efficiency. The flower-like FeOCl could effectively accelerate the separation and migration of photogenic carrier. In the photo-Fenton experiment, flower-like FeOCl also demonstrated good photo-Fenton performance. Within 50 minutes, the removal rate of RhB reached 98.8%. |
| Key words: FeOCl Rhodamine B free-radical photo Fenton degradation mechanism |
